Global Patent Index - EP 2521409 A1

EP 2521409 A1 20121107 - Base station, interference control method and radio communication system

Title (en)

Base station, interference control method and radio communication system

Title (de)

Basisstation, Interferenzsteuerungsverfahren und Funkkommunikationssystem

Title (fr)

Station de base, procédé de commande d'interférence et système de communication radio

Publication

EP 2521409 A1 20121107 (EN)

Application

EP 12165954 A 20120427

Priority

JP 2011103468 A 20110506

Abstract (en)

Timing division multiplexing is conducted between the cells to avoid intercell interference. Transmission timing in a time slot pattern has a given interval. A base station 1201 determines the transmission timing based on measured uplink interference power. For example, an uplink time slot pattern in which the measured uplink interference power is smaller is selected. A downlink time slot pattern is assigned so that a response to HARQ is returned at that timing. If traffic is busy, additional time slot pattern may be assigned. In determination of the traffic volume, for example, the queued buffer size, the number of connected terminals 1203, or the number of connections to a higher-level device can be used. Assignment timing can be an initial setup time, or a fluctuation detection time of a channel which can be realized by collection of report information on a downlink communication quality, periodic monitor of uplink interference information.

IPC 8 full level

H04W 72/08 (2009.01); H04W 72/04 (2009.01)

CPC (source: EP US)

H04L 1/1893 (2013.01 - EP US); H04W 72/542 (2023.01 - EP US)

Citation (applicant)

Citation (search report)

  • [YA] US 2004190474 A1 20040930 - ZHANG GUODONG [US]
  • [YA] US 5483537 A 19960109 - DUPUY PIERRE [FR]
  • [A] WO 03096710 A2 20031120 - INTERDIGITAL TECH CORP [US]
  • [A] SOUROUR E: "TIME SLOT ASSIGNMENT TECHNIQUES FOR TDMA DIGITAL CELLULAR SYSTEMS", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 43, no. 1, 1 February 1994 (1994-02-01), pages 121 - 127, XP000450953, ISSN: 0018-9545, DOI: 10.1109/25.282272

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2521409 A1 20121107; CN 102781035 A 20121114; CN 102781035 B 20150617; JP 2012235375 A 20121129; JP 5667508 B2 20150212; US 2012281569 A1 20121108; US 8811286 B2 20140819

DOCDB simple family (application)

EP 12165954 A 20120427; CN 201210137484 A 20120504; JP 2011103468 A 20110506; US 201213462273 A 20120502